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| Titel |
Desert dust and anthropogenic aerosol interactions in the Community Climate System Model coupled-carbon-climate model |
| VerfasserIn |
N. Mahowald, K. Lindsay, D. Rothenberg, S. C. Doney, J. K. Moore, P. Thornton, J. T. Randerson, C. D. Jones |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 8, no. 2 ; Nr. 8, no. 2 (2011-02-15), S.387-414 |
| Datensatznummer |
250005449
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| Publikation (Nr.) |
 copernicus.org/bg-8-387-2011.pdf |
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| Zusammenfassung |
| Coupled-carbon-climate simulations are an essential tool for predicting the
impact of human activity onto the climate and biogeochemistry. Here we
incorporate prognostic desert dust and anthropogenic aerosols into the
CCSM3.1 coupled carbon-climate model and explore the resulting interactions
with climate and biogeochemical dynamics through a series of transient
anthropogenic simulations (20th and 21st centuries) and
sensitivity studies. The inclusion of prognostic aerosols into this model
has a small net global cooling effect on climate but does not significantly
impact the globally averaged carbon cycle; we argue that this is likely to
be because the CCSM3.1 model has a small climate feedback onto the carbon
cycle. We propose a mechanism for including desert dust and anthropogenic
aerosols into a simple carbon-climate feedback analysis to explain the
results of our and previous studies. Inclusion of aerosols has statistically
significant impacts on regional climate and biogeochemistry, in particular
through the effects on the ocean nitrogen cycle and primary productivity of
altered iron inputs from desert dust deposition. |
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